Tubular lantern.



G. PLERB. TUBULAR LANTERN.

APPLIOATION FILED M31114, 1909.

96, 1 35, Eatented June 21, 1910 /6 m V V f 4 1 g 5) I I A9 A;

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CHARLES F. EBB, 0E ROGKA'VI'AY POINT, NEW YORK, ASSIGNOJR TO 783. It DIETZ COMTPAXKTY, {3F NEW YQRK, N. "if.

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Specification of In ttersftatent.

Patented June 21, rain Apnlication filed March 24, 1909. Serial No. 455,3??0.

T 0 all whom it may concern:

bular lanterns and has particular reference.

to that class of frames in which each tube is composed of two stamped halt-tubesfeach of half-round cross section, and both se- ,cured together by seams extending along the inner and outer edges of the halt-tubes.

, The invention has for its object to stiffen the tubes of the tubular trains in, a simple, inexpensive andeflective inanner. 1

In the accompanying drawings Figure 1 is an elevation of a tubular lantern embody ing this invention. Fig. 2 is a horizontal section in line 2-,-2, Fig. 1 on an enlarged scale, Fig. 3 is a vertical section in line 33, Fig. 1, on an enlarged scale.-

t is a horizontal section in line M, Fig, 1, on an enlarged sea-1e.

Like reference characters "refer to lilze parts in the several figures.

A represents the base of the lantern comprising the oil pot 10, the air' chamber 11 thereon and the burner 12. I

Brepresents the side tubes formed each with'a lower elbow portion 13 which connects with the air chamber 11 and with an upperelbow portion 14: which connects with the upper air chamber or band (1 Each air tube is composed of two half-tubes 15, 16,

half-round in cross section and provided along their inner andouter edges, respec tively, with flanges 17, 18, which are united in the form of a seam when the halves have been placed against each other, one of the flanges 17 being so wide that it can be closed around the opposing flange 18 'of the other half-tube.

19 represents transverse beads or hollow ribs which are formed on the upright portion of each hal'f tube at suitable intervals, three such ribs being usually suflicient for tubes of ordinary height I These beads or ribs take up the surpius of metal in shaping the half-tubes from flat blanks between dies and so draw the metal tight in stamping the. half-tube and prevent buckling of the metal or the formation of fiat, Wavy'or misshaped spots in the surface of the tube, which would not only mar the appearance of the tube but also impair its strength a 20 represents a fiat or plane seat'which is formed on the side or" the top band or cha n ber or the reception of the upper end of the side tube, which. is secured to this seat by means of a head 21 closed against the outer of the seat and the flanged end'22 at the tube which is closedagainst the inner side of the seat. The latter is arranged in a vertical and transverse plane on the outer side of the cylindrical. top band or chamber C and enables the end head 21 of the tube to seat itself squarely against the top chamber, whereby the connection at this point is simplified and strengthened.

I claim as my invention:

Atubular lantern having tubes composed of stamped half-tubesof sheet inetal'which extend in a continuous piece front end to end and are provided between their ends at intervals with hollow transverse stiffening beads, said half-tubes being joined on opposite sides by overlapped seams, substantially as set forth.

Witness my hand in the presence of two subscribing witnesses.

I CHARLES r. nan.

Witnesses ROBERT A. GURRIE, HOWARD L. FLETCHER. 

